1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL 1066 Low-Voltage AC and DC Power Circuit Breakers Used in Enclosures STANDARD FOR SAFETYUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FRO
2、M ULUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL Standard for Safety for Low-Voltage AC and DC Power Circuit Breakers Used in Enclosures, UL 1066 Fourth Edition, Dated April 13, 2012 Summary of Topics This revision of ANSI/UL 1066 is b
3、eing issued to incorporate the following changes in requirements: Revision to SC2.5 to Clarify Testing Requirements for Circuit Breakers with a Remotely Operated Racking Mechanism Revision of the Scope to Increase the Maximum Allowable Voltage of Low-Voltage Power Circuit Breakers The revised requir
4、ements are substantially in accordance with Proposal(s) on this subject dated January 20, 2017. Text that has been changed in any manner or impacted by ULs electronic publishing system is marked with a vertical line in the margin. Changes in requirements are marked with a vertical line in the margin
5、 and are followed by an effective date note indicating the date of publication or the date on which the changed requirement becomes effective. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form by any means, electronic, mechan
6、ical photocopying, recording, or otherwise without prior permission of UL. UL provides this Standard as is without warranty of any kind, either expressed or implied, including but not limited to, the implied warranties of merchantability or tness for any purpose. In no event will UL be liable for an
7、y special, incidental, consequential, indirect or similar damages, including loss of prots, lost savings, loss of data, or any other damages arising out of the use of or the inability to use this Standard, even if UL or an authorized UL representative has been advised of the possibility of such dama
8、ge. In no event shall ULs liability for any damage ever exceed the price paid for this Standard, regardless of the form of the claim. Users of the electronic versions of ULs Standards for Safety agree to defend, indemnify, and hold UL harmless from and against any loss, expense, liability, damage, c
9、laim, or judgment (including reasonable attorneys fees) resulting from any error or deviation introduced while purchaser is storing an electronic Standard on the purchasers computer system. MARCH 22, 2017 UL 1066 tr1UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITH
10、OUT PERMISSION FROM UL MARCH 22, 2017 UL 1066 tr2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL APRIL 13, 2012 (Title Page Reprinted: March 22, 2017) 1 UL 1066 Standard for Low-Voltage AC and DC Power Circuit Breakers U
11、sed in Enclosures First Edition January, 1985 Second Edition March, 1993 Third Edition May, 1997 Fourth Edition April 13, 2012 This ANSI/UL Standard for Safety consists of the Fourth edition including revisions through March 22, 2017. The most recent designation of ANSI/UL 1066 as an American Nation
12、al Standard (ANSI) occurred on March 22, 2017. ANSI approval for a standard does not include the Cover Page, Transmittal Pages and Title Page. Comments or proposals for revisions on any part of the Standard may be submitted to UL at any time. Proposals should be submitted via a Proposal Request in U
13、Ls On-Line Collaborative Standards Development System (CSDS) at https:/. ULs Standards for Safety are copyrighted by UL. Neither a printed nor electronic copy of a Standard should be altered in any way. All of ULs Standards and all copyrights, ownerships, and rights regarding those Standards shall r
14、emain the sole and exclusive property of UL. COPYRIGHT 2017 UNDERWRITERS LABORATORIES INC. ANSI/UL 1066-2017UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL APRIL 13, 2012 UL 1066 2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED F
15、OR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL CONTENTS INTRODUCTION 1 Scope .7 2 General 8 3 Components .9 4 Units of Measurement .9 5 Undated References 9 CONSTRUCTION 6 General .10 7 Corrosion Protection .10 8 Insulating Materials 10 9 Current-Carrying Parts .11 10 Termination
16、s .11 11 Operating Mechanism 11 12 Grounding 11 13 Trip Devices 12 14 Interlocks .12 15 Control Circuit Wiring 12 16 Control Circuit Field Wiring Connections .12 PERFORMANCE 17 General 13 18 Interlock Verication Tests 14 19 Dielectric Voltage-Withstand Tests .14 20 Grounding Resistance Tests 14 21 T
17、rip Device Calibration Tests .15 RATINGS 22 General 15 MARKINGS 23 General 15 SUPPLEMENT SA - LOW-VOLTAGE AC POWER CIRCUIT BREAKERS (NAVAL USE) INTRODUCTION SA1 Scope SA1 APRIL 13, 2012 UL 1066 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM U
18、L PERFORMANCE SA2 Endurance Test .SA1 SA3 Continuous Current Test SA1 SA4 Calibration Test .SA2 SA5 Inclined Operations SA2 SA6 Vibration Test .SA2 SA6.1 General SA2 SA6.2 Resonance frequency test SA3 SA6.3 Variable frequency test SA3 SA7 Calibration Test .SA4 MARKINGS SA8 General SA4 SUPPLEMENT SB
19、- CLASSIFIED TRIP DEVICES FOR USE WITH LOW-VOLTAGE AC POWER CIRCUIT BREAKERS INTRODUCTION SB1 Scope SB1 CONSTRUCTION SB2 General SB1 PERFORMANCE SB3 General SB1 MARKINGS SB4 General SB2 MANUFACTURING AND PRODUCTION-LINE TESTS SB5 General SB2 SUPPLEMENT SC - INTEGRALLY MOUNTED, REMOTELY OPERATED RACK
20、ING MECHANISMS FOR USE WITH LOW VOLTAGE POWER CIRCUIT BREAKERS INTRODUCTION SC1 Scope SC1 AUGUST 2, 2016 UL 1066 4UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL CONSTRUCTION SC2 General SC1 SC3 Control Powered Racking Mechanisms .SC2 SC4 Co
21、rd-Connected Racking Mechanisms .SC2 SC5 Battery Operated Racking Mechanisms SC3 PERFORMANCE SC6 Mechanical Endurance Tests .SC3 SC7 Obstruction Tests .SC4 MARKINGS SC8 General SC4 APPENDIX A Standards for ComponentsA1 AUGUST 2, 2016 UL 1066 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPROD
22、UCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL This page intentionally left blank. APRIL 13, 2012 UL 1066 6UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL INTRODUCTION 1 Scope 1.1 These requirements cover low-voltage ac power circuit brea
23、kers as follows: a) Stationary-mounted or drawout-mounted types, b) 2-pole, 3-pole, and 4-pole constructions, c) Manually operated or power operated, and d) With or without electromechanical or solid-state type trip device. Revised 1.1 effective April 13, 2017 1.2 These requirements apply to drawout
24、-mounted type low-voltage ac integrally fused power circuit breakers, consisting of low-voltage ac power circuit breakers with integral current limiters or fuses. 1.2 effective April 13, 2017 1.3 These requirements apply to low-voltage ac fuse draw-outs consisting of current limiters or fuses in a d
25、rawout assembly intended to be connected in series with a low-voltage ac power circuit breaker to form a fused circuit breaker. 1.3 effective April 13, 2017 1.4 These requirements apply to general purpose type low-voltage dc power circuit breakers. 1.4 effective April 13, 2017 1.5 These requirements
26、 cover equipment intended for use in ordinary locations in accordance with the National Electrical Code, ANSI/NFPA 70. 1.5 effective April 13, 2017 1.6 These requirements are intended to supplement and be used in conjunction with the: a) Standard for Low-Voltage AC Power Circuit Breakers Used In Enc
27、losures, IEEE C37.13, b) Standard for Low-Voltage DC Power Circuit Breakers Used In Enclosures, IEEE C37.14, c) Standard for Metal-Enclosed Low-Voltage Power Circuit-Breaker Switchgear, IEEE C37.20.1, d) Test Procedures for Switchgear Low-Voltage AC Power Circuit Breakers Used In Enclosures, ANSI C3
28、7.50, and e) Conformance Test Procedures for Switchgear Metal-Enclosed Low-Voltage AC Power Circuit Breaker Switchgear Assemblies, ANSI C37.51. 1.6 effective April 13, 2017 JULY 16, 2013 UL 1066 7UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM
29、UL 1.7 These requirements cover equipment rated 1000 V or less nominal, 1058 V maximum ac and 1500 V maximum dc. 1.8 This Standard does not apply to molded-case circuit breakers. 1.8 effective April 13, 2017 1.9 These circuit breakers are intended for installation in circuit breaker enclosures, swit
30、chboards (switchgear), panelboards, and the like. Drawout-mounted devices are intended for use with specic adapters or receiving equipment. The acceptability of the combination of a circuit breaker with respect to any overall enclosure will be determined when the complete product is considered. 1.9
31、effective April 13, 2017 2 General Section 2 effective April 13, 2017 2.1 The requirements in this Standard shall be applied in addition to those contained in the following documents: a) Standard for Low-Voltage AC Power Circuit Breakers Used in Enclosures, IEEE C37.13, b) Standard for Low-Voltage D
32、C Power Circuit Breakers Used in Enclosures, IEEE C37.14, c) Test Procedures for Switchgear Low-Voltage AC Power Circuit Breakers Used in Enclosures, ANSI C37.50, and d) Conformance Test Procedures for Switchgear Metal-Enclosed Low-Voltage AC Power Circuit Breaker Switchgear Assemblies, ANSI C37.51.
33、 2.2 The term circuit breaker as used in this Standard means low-voltage power circuit breaker, both the ac and dc types. When a requirement applies specically to either an ac or dc type, but not both, the term ac circuit breaker or dc circuit breaker is used. The term fused circuit breaker is used
34、for an integrally fused power circuit breaker or the combination of a fuse drawout and a circuit breaker. 2.3 Reference in this Standard is made by designation only to the following Standards. MARCH 22, 2017 UL 1066 8UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WIT
35、HOUT PERMISSION FROM UL Designation Title IEEE C37.13 Standard for Low-Voltage AC Power Circuit Breakers Used in Enclosures IEEE C37.14 Standard for Low-Voltage DC Power Circuit Breakers Used in Enclosures IEEE C37.16 Preferred Ratings, Related Requirements, and Application Recommendations for Low-V
36、oltage AC and DC Power Circuit Breakers ANSI C37.17 Trip Devices for AC and General Purpose DC Low-Voltage Power Circuit Breakers IEEE C37.20.1 Metal-Enclosed Low-Voltage Power Circuit-Breaker Switchgear ANSI C37.50 Test Procedures for Switchgear Low-Voltage AC Power Circuit Breakers Used in Enclosu
37、res ANSI C37.51 Conformance Test Procedures for Switchgear Metal- Enclosed Low-Voltage AC Power Circuit Breaker Switchgear Assemblies ANSI/IEEE C37.100 Denitions for Power Switchgear JULY 16, 2013 UL 1066 8AUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMI
38、SSION FROM UL JULY 16, 2013 UL 1066 8B No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 2.4 The terms used in this Standard are as indicated in ANSI/IEEE C37.100. 2.5 ADAPTER Inasmuch as an adapter is designed to interface
39、 between a drawout-mounted device and the receiving devices such as individual enclosures, deadfront switchboards, and panelboards an adapter is to be investigated in conjunction with the intended drawout-mounted device. 3 Components Section 3 effective April 13, 2017 3.1 Except as indicated in 3.2,
40、 a component of a product covered by this Standard shall comply with the requirements for that component. See Appendix A for a list of standards covering components generally used in the products covered by this Standard. 3.2 A component need not comply with a specic requirement that: a) Involves a
41、feature or characteristic not needed in the application of the component in the product covered by this Standard, or b) Is superseded by a requirement in this Standard. 3.3 A component shall be used in accordance with its rating established for the intended conditions of use. 3.4 Specic components a
42、re incomplete in construction features or restricted in performance capabilities. Such components are intended for use only under limited conditions, such as certain temperatures not exceeding specied limits, and shall be used only under those specic conditions. 4 Units of Measurement Section 4 effe
43、ctive April 13, 2017 4.1 Values stated without parentheses are the requirement. Values in parentheses are explanatory or approximate information. 5 Undated References Section 5 effective April 13, 2017 5.1 Any undated reference to a code or standard appearing in the requirements of this standard sha
44、ll be interpreted as referring to the latest edition of that code or standard. APRIL 13, 2012 UL 1066 9UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL CONSTRUCTION 6 General Section 6 effective April 13, 2017 6.1 These circuit breakers shall
45、 comply with IEEE C37.13 or IEEE C37.14 as appropriate, and with the requirements in this Standard. 6.2 A fuse draw-out shall include an open-fuse trip device that will cause tripping of the series circuit breaker, when one or more of the fuses or current limiters opens. 6.3 A fused circuit breaker
46、shall include an open-fuse trip device that will cause tripping of the circuit breaker, when one or more of the fuses or current limiters opens. 6.4 A circuit breaker shall be so formed and assembled that it will have the strength and rigidity necessary to resist the ordinary abuses to which it may
47、be subjected, including the tests specied in these requirements, without increasing the risk of re or electric shock due to partial or total collapse with a resulting loosening or displacement of parts or other serious defects. 7 Corrosion Protection Section 7 effective April 13, 2017 7.1 Iron and s
48、teel parts shall be protected against corrosion by enameling, galvanizing, plating or an equivalent means. Exception: Thermal elements, magnet pole faces, and hardened and polished parts, such as latching surfaces where such protection is impractical, need not be protected. 8 Insulating Materials Se
49、ction 8 effective April 13, 2017 8.1 An insulating material is to be investigated to determine its acceptability for the application with consideration being given to its: a) Mechanical strength, b) Dielectric properties, c) Insulation resistance, d) Tracking resistance, e) Heat-resistant qualities, f) The degree to which it is enclosed or protected, and g) Any other features having a bearing on the risk of re and electric shock involved. All of these factors are to be considered with respect to th
